LTC3388-1_15 Datasheet, PDF (6/20 Pages) Linear Technology – 20V High Efficiency Nanopower Step-Down Regulator

LTC3388-1/LTC3388-3
TYPICAL PERFORMANCE CHARACTERISTICS
3.0V Output vs Temperature
(LTC3388-3)
3.10
3.05
SLEEP THRESHOLD
3.00
WAKE-UP THRESHOLD
2.95
2.90
2.85
2.80
PGOOD FALLING
2.75
2.70
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
338813 G13
V_OUT Load Regulation
(LTC3388-1)
1.56
V_IN = 5.5V, L = 22μH, C_OUT = 100μF,
D1 = 0, D0 = 1
1.54
1.52
1.50
1.48
1.46
1.44
1μ
10μ 100μ 1m
LOAD CURRENT (A)
10m
338813 G16
V_OUT Line Regulation
(LTC3388-3)
3.36
L = 22μH, I_LOAD = 30mA, D1 = 0, D0 = 1
3.34
3.32
3.30
3.28
3.26
3.24
4 6 8 10 12 14 16 18 20
V_IN (V)
338813 G19
6
3.3V Output vs Temperature
(LTC3388-3)
3.40
3.35
SLEEP THRESHOLD
3.30
3.25
WAKE-UP THRESHOLD
3.20
3.15
3.10
3.05
PGOOD FALLING
3.00
2.95
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
338813 G14
V_OUT Load Regulation
(LTC3388-3)
3.36
V_IN = 5.5V, L = 22μH, C_OUT = 100μF,
D1 = 1, D0 = 0
3.34
3.32
3.30
3.28
3.26
3.24
1μ
10μ 100μ 1m
LOAD CURRENT (A)
10m
338813 G17
I_VOUT vs Temperature (LTC3388-1)
80
V_OUT = 2.5V
V_OUT = 1.8V
70
V_OUT = 1.5V
V_OUT = 1.2V
60
50
40
30
20
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
338813 G20
5.0V Output vs Temperature
(LTC3388-3)
5.1
SLEEP THRESHOLD
5.0
WAKE-UP THRESHOLD
4.9
4.8
4.7
PGOOD FALLING
4.6
4.5
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
338813 G15
V_OUT Line Regulation
(LTC3388-1)
1.56
L = 22μH, I_LOAD = 30mA, D1 = 0, D0 = 1
1.54
1.52
1.50
1.48
1.46
1.44
4 6 8 10 12 14 16 18 20
V_IN (V)
338813 G18
I_VOUT vs Temperature (LTC3388-3)
160
V_OUT = 5.0V
V_OUT = 3.3V
140
V_OUT = 3.0V
V_OUT = 2.8V
120
100
80
60
40
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
338813 G21
338813f